/**
 * 
 */
function showHide(id)
{
  var obj = document.getElementById(id);
  if (typeof obj == 'undefined') return;
  if (obj.style.display == 'block') obj.style.display = 'none';
  else obj.style.display = 'block';
  if (navigator.userAgent.indexOf("MSIE")>=0) res();
}